Sign support



FIG. 1 is a reduced scale front perspective view of a sign support according to the invention;

FIG. 2 is a front elevational view of the sign support;

FIG. 3 is a rear elevational view of the sign support;

FIG. 4 is a right side elevational view of the sign support, the left side elevational view being a mirror image thereof;

FIG. 5 is a top plan view of the sign support; and,

FIG. 6 is a bottom plan view of the sign support.

The broken lines in the drawings depict environmental structure which forms no part of the claimed design. The sign support is shown with break lines to indicate the support has indeterminate length. 

The ornamental design for a sign support, as shown and described. 